Graphic user interface for a display screen



FIG. 1 is a front view of a graphic user interface for a display screen showing our new design; and,

FIG. 2 is a front view thereof, the broken line showing in an alternate configuration.

The broken line showing of the display screen, images, and text in both views forms no part of the claimed design. 

The ornamental design for a graphic user interface for a display screen, as shown and described. 